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sediment transport

These experiments use an inflow to transport sediment and build sedimentary deposits. Under the subaqeuous basin condition, the basin is filled with fresh water and a density current is generated using saline solution. Under the subaerial basin condition, fresh water is supplied to the basin.

Basin for fluvial sediment transport experiments, including density currents. Two slope breaks in the basin favor sediment deposition, with a maximum accomodation space of approximately 5 cm. The bed slope is adjustable. Pumps are used to supply inflow and to control the water level.

Data here was collected at the River Dynamics Laboratory at Arizona State University. Measurements of particle motions were obtained using a manual tracking method within the program ImageJ. The data include 1250 frames or 5 seconds of high-speed imagery, associated coordinates of particle motions, and derived measurements of particle motions (e.g. instantaneous velocities, particle accelerations, hop distances, and travel times).

This experiment was performed in the recirculating flume at the Arizona State University River Dynamics Laboratory.

Flow velocities in the flume were measured using an acoustic Doppler velocimeter (ADV) positioned approximately 1 cm above the bed, the time-averaged velocity near the bed was 31.0 cm sec-1 with a flow depth of 12.5 cm. The bed material used in this experiment is a uniform, coarse sand with an average diameter D50 of 0.05 cm. The stream bed was prepared by smoothing it flat prior to the start of the experiment.

Data collected and processed by H. Ismail et al during density current confluence experiments at the University of South Carolina Hydraulics Lab (2013-2015). In all files, x, y, and z denote down-stream, cross-channel, and vertical coordinates, respectively. The origin is the upstream junction point on the flume bed. u and v denote velocity in the x and y directions, respectively. U and H are depth-averaged velocity and current thickness, respectively.

Specifications and features for the unidirectional, sediment-feed tilting flume at the Hydraulics Laboratory of the Department of Civil and Environmental Engineering of the University of South Carolina at Columbia.